单晶光纤制备及高温传感器研究进展

摘要/Abstract

摘要： 单晶光纤(single-crystal fiber),是一种纤维形态的晶体材料,凭借优异的物理和化学性能以及大长径比的结构特点在国防及民生领域都有着广泛的应用前景。随着导模法、激光加热基座法以及微下拉法等生长技术的日渐成熟,单晶光纤迎来了科学研究和应用发展的黄金时期,其材料种类以及应用方向均呈现多元化发展态势,其中面向高温传感领域的高熔点氧化物单晶光纤凭借其耐高温、抗氧化、结构紧凑等特点在强氧化、强辐射、强腐蚀、强电磁干扰等极端环境中展现出了巨大的应用潜力。近年来,研究者们不断将光学、声学等传感技术与单晶光纤介质相结合,在保持传感器结构灵活性的基础上,拓宽了常规玻璃光纤传感器的使用温度,同时弥补了热电偶等传统接触式测温技术在恶劣环境中寿命较低的缺陷。本文以单晶光纤的制备技术为出发点,回顾了单晶光纤的发展历史,分析了单晶光纤三种主要制备方法的技术特点及发展现状。同时,总结了单晶光纤在高温传感领域的主要研究成果,展望了单晶光纤高温传感技术的应用前景。

关键词: 单晶光纤, 单晶生长, 高温传感器, 光纤传感器, 导模法, 微下拉法, 激光加热基座法

Abstract: Single-crystal fiber (SCF) is a fibrous crystalline material, which possesses broad application prospects in the fields of national defense and people's livelihood due to its excellent physical and chemical properties and large aspect ratio. With the maturity and development of the edge-defined film-fed growth technique, laser-heated pedestal growth technique and micro-pulling down technique, SCF ushers in a boom period with various materials and diversified applications. Among them, high melting point oxide SCF for high-temperature sensing has shown great potential for application in harsh environments such as strong oxidation, strong radiation, strong corrosion and strong electromagnetic interference by virtue of its high temperature resistance, oxidation resistance and compact structure. In recent years, researchers have combined optical and acoustic sensing technologies with SCF to broaden the operating temperature of conventional glass fiber sensors while maintaining the structural flexibility, and to compensate for the low lifetime of traditional contact temperature sensing tecniques such as thermocouples in harsh environments. Here, following the development process of the single crystal fiber, the technical characteristics and the research status of the growth techniques as well as the temperature sensing techniques are summarized in detail.

Key words: single-crystal fiber, crystal growth, high-temperature sensor, fiber sensor, edge-defined film-fed growth, micro-pulling down, laser-heated pedestal growth

中图分类号:

O78
TN253

王涛, 贾志泰, 李阳, 张健, 陶绪堂. 单晶光纤制备及高温传感器研究进展[J]. 人工晶体学报, 2021, 50(9): 1603-1624.

WANG Tao, JIA Zhitai, LI Yang, ZHANG Jian, TAO Xutang. Single-Crystal Fiber Growth and Single-Crystal Fiber High-Temperature Sensors: Review and Perspective[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(9): 1603-1624.

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